What are some signs that a baby is allergic to formula?

The most common food allergy or sensitivity among babies is to cows' milk protein, found in most formula. And about half of infants who are sensitive to cows' milk are also sensitive to soy-based formula. Some of the most obvious signs of this sensitivity include a rash, hives, eczema (dry, flaky patches of skin, especially around the forehead), and vomiting.

You should be aware of more subtle clues, too. Shortly after you've started or finished a feeding, watch for signs such as continual fussiness or crying and obvious discomfort. Your baby may be excessively gassy or seem "colicky." He may have a red ring around his rectum that a zinc oxide preparation won't clear up. Or he may have stools that are unusually hard or excessively loose, watery, and foul smelling. Your baby may spit up more often than is considered normal, too.

Allergies in general seem to be on the rise. One way to reduce the number and severity of your baby's allergies is to breastfeed exclusively for at least six months. If your family has a history of allergies, find out how you and your partner were fed as infants and whether you had any adverse reactions. Ask your baby's healthcare provider about the best ways to help your baby avoid potential allergens.

If your baby is showing signs and symptoms of a formula allergy, check with your child's doctor before switching to a new formula.

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